powerpc/powernv/pci: Add PHB register dump debugfs handle

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On EEH events the kernel will print a dump of relevant registers.
If EEH is unavailable (i.e. CONFIG_EEH is disabled, a new platform
doesn't have EEH support, etc) this information isn't readily available.

Add a new debugfs handler to trigger a PHB register dump, so that this
information can be made available on demand.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Russell Currey 2016-07-28 15:05:03 +10:00 • committed by Michael Ellerman

parent 3eabf88579

commit 98b665da57

1 changed files with 38 additions and 1 deletions

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arch/powerpc/platforms/powernv/pci-ioda.c

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